gurrium https://blog.hatena.ne.jp/gurrium/ ぜのぜ https://giarrium.hatenablog.com/ Kotlin 日記 懐かしい人と飲みに行った． 今日書いたコード fun main() { val peopleAges = mutableMapOf<String, Int>( "Fred" to 30, "Ann" to 23 ) peopleAges.put("Barbara", 42) peopleAges["Joe"] = 51 peopleAges["Fred"] = 31 println(peopleAges) } {Fred=31, Ann=23, Barbara=42, Joe=51} 感想 Kotlinのコレクションは全部mutable/immutableそれぞれ用意されてんのかな 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fgiarrium.hatenablog.com%2Fentry%2F2021%2F12%2F30%2F230212" title="194日目 - ぜのぜ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2021-12-30 23:02:12 rich https://giarrium.hatenablog.com/entry/2021/12/30/230212 1.0 100%